The length of a metallic tube is 1 metre, its thickness is 1 cm and its inner diameter Is 12 cm. Find the weight of the tube if the density of the metal is 7.7 grams per cubic centimetre.
A cylindrical tube, open at both ends, is made of metal. The internal diameter of tube, is 10 cm. and its length is 25 cm. The thickness of the metal is 8 mm everywhere. Calculate the volume of the metal.